Add better error messages if name exists when saving a job

ui/src/app/api/jobs/route.ts

@@ -52,7 +52,13 @@ export async function POST(request: Request) {
       });
       return NextResponse.json(training);
     }
-  } catch (error) {
+  } catch (error: any) {
+    if (error.code === 'P2002') {
+      // Handle unique constraint violation, 409=Conflict
+      return NextResponse.json({ error: 'Job name already exists' }, { status: 409 });
+    }
+    console.error(error);
+    // Handle other errors
     return NextResponse.json({ error: 'Failed to save training data' }, { status: 500 });
   }
 }

ui/src/app/jobs/new/page.tsx

@@ -104,8 +104,12 @@ export default function TrainingForm() {
         }
       })
       .catch(error => {
-        console.error('Error saving training:', error);
-        setStatus('error');
+        if (error.response?.status === 409) {
+          alert('Training name already exists. Please choose a different name.');
+        } else {
+          alert('Failed to save job. Please try again.');
+        }
+        console.log('Error saving training:', error);
       })
       .finally(() =>
         setTimeout(() => {